/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.druid.server.metrics;

import java.util.Map;

/**
 * Provides task count metrics for the indexers
 * These metrics are reported by indexers
 */
public interface IndexerTaskCountStatsProvider
{
  /**
   * Map from datasource name to the number of running tasks on the Indexer.
   */
  Map<String, Long> getWorkerRunningTasks();

  /**
   * Map from datasource name to the number of assigned tasks to the Indexer.
   */
  Map<String, Long> getWorkerAssignedTasks();

  /**
   * Map from datasource name to the number of completed tasks by the Indexer.
   */
  Map<String, Long> getWorkerCompletedTasks();

  Map<String, Long> getWorkerFailedTasks();

  Map<String, Long> getWorkerSuccessfulTasks();
}
